Fabrication of Li2TiO3 Ceramic Pebbles by Gelcasting Method

Ming Hong; Ying Chun Zhang; Yang Hong Liu; Bao Jian Fu

doi:10.4028/www.scientific.net/KEM.512-515.1717

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Fabrication of Li₂TiO₃ Ceramic Pebbles by Gelcasting Method
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 512-515Fabrication of Li2TiO3 Ceramic Pebbles by...

Fabrication of Li₂TiO₃ Ceramic Pebbles by Gelcasting Method

Abstract:

Lithium titanate (Li₂TiO₃) ceramic pebbles are considered to be a candidate material of the tritium breeders for fusion reactor from the viewpoints of good tritium recovery, chemical stability and other excellent properties. In this study, fine grain and pure Li₂TiO₃ powders were prepared by solid-state method at 700°C using TiO₂ and Li₂CO₃ as raw materials. Li₂TiO₃ pebbles were prepared by gel-casting method using acrylamide (AM) as organic monomer, N,N’-methylenebisacrylamide (MBAM) as cross-linker, ammonium citrate as dispersant, and isooctyl alcohol as defoamer. The effect of solid content, dispersant, pH and the ball milling time on the fluidity and dispersion of ceramics slurry were investigated, and the effects of sintering temperature and holding time were also discussed in present study. The sintered ceramic pebbles with diameter of 1.0 mm show a smooth surface, uniform grain size and perfect sphericity. The Li₂TiO₃ ceramic pebbles sintered at 1250°C for 8 hours had the highest density (> 90% of theoretical density) and crush strength.

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Periodical:

Key Engineering Materials (Volumes 512-515)

Pages:

1717-1720

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.512-515.1717

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Online since:

June 2012

Authors:

Ming Hong, Ying Chun Zhang, Yang Hong Liu, Bao Jian Fu

Keywords:

Gelcasting Method, ITER, Lithum Titanate, Tritium Breeding Material

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References

[1] N. Roux, S. Tanaka, C. Johnson, R. Verrall, Ceramic breeder material development, Fusion Eng Des. 41 (1998) 31-38.

DOI: 10.1016/s0920-3796(97)00140-3

Google Scholar

[2] J.G. van der Laan, H. Kawamura, N. Roux, D. Yamaki, Ceramic breeder research and development: progress and focus, J Nucl Mater. 283-287 (2000) 99-109.

DOI: 10.1016/s0022-3115(00)00352-4

Google Scholar

[3] J.D. Lulewicz, N. Roux, Fabrication of Li2TiO3 pebbles by the extrusion-spheronisation-sintering process, J Nucl Mater. 307-311 (2002) 803-806.

DOI: 10.1016/s0022-3115(02)00981-9

Google Scholar

[4] C.H. Jung, J.Y. Park, W.J. Kim, W.S. Ryu, S.J. Lee, Characterizations of Li2TiO3 prepared by a solution combustion synthesis and fabrication of spherical particles by dry-rolling granulation process, Fusion Eng Des. 81 (2006) 1039-1044.

DOI: 10.1016/j.fusengdes.2005.08.085

Google Scholar

[5] K. Tsuchiya, H. Kawamura, Development of wet process with substitution reaction for the mass production of Li2TiO3 pebbles, J Nucl Mater. 283-287 (2000) 1380-1384.

DOI: 10.1016/s0022-3115(00)00099-4

Google Scholar

[6] A.C. Young, O.O. Omatete, M.A. Janney, P.A. Menchhofer, Gelcasting of alumina, J Am Ceram Soc. 74 (1991) 612-618.

DOI: 10.1111/j.1151-2916.1991.tb04068.x

Google Scholar

[7] J. Cesarano, I.A. Aksay, Processing of highly concentrated aqueous α-alumina suspensions stabilized with polyelectrolytes, J Am Ceram Soc. 71 (1988) 1062-1067.

DOI: 10.1111/j.1151-2916.1988.tb05792.x

Google Scholar

[8] C.E. Johnson, K. Noda, N. Roux, Ceramic breeder materials: Status and needs, J Nucl Mater. 258-263 (1998) 140-148.

DOI: 10.1016/s0022-3115(98)00357-2

Google Scholar

[9] D. Cruz, H. Pfeiffer, S. Bulbulian, Synthesis of Li2MO3 (M = Ti or Zr) by the combustion method, Solid State Sci. 8 (2006) 470-475.

DOI: 10.1016/j.solidstatesciences.2006.01.003

Google Scholar